This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Chemistry Part Ii > Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 3 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is true about London dispersion forces? A) They do not affect boiling points. B) They are stronger than hydrogen bonds. C) They are the only forces in polar molecules. D) They are proportional to the molar mass. Show Answer Correct Answer: D) They are proportional to the molar mass. 2. Name the ocean that the waters of the Catawba River run. A) Arctic. B) Pacific. C) Indian. D) None of these. Show Answer Correct Answer: D) None of these. 3. In general, substances with stronger intermolecular forces have ..... boiling points than those with weaker intermolecular forces A) Higher. B) Lower. C) All the above. D) None of the above. Show Answer Correct Answer: A) Higher. 4. Which isotope of Hydrogen emits low energy $\beta$-particles A) Tritium. B) Deuterium. C) Protium. D) None of the Above. Show Answer Correct Answer: A) Tritium. 5. The hydrogen bonds between water molecules are: A) Hydrophobic interactions. B) Ionic bonds. C) Weak electrostatic attractions. D) Strong covalent bonds. Show Answer Correct Answer: C) Weak electrostatic attractions. 6. What is the most common oxidation state of hydrogen? A) +1. B) +2. C) +3. D) -2. Show Answer Correct Answer: A) +1. 7. Vapour density of HCl is ..... A) 18.24. B) 19.25. C) 18.25. D) None of the above. Show Answer Correct Answer: C) 18.25. 8. What are the environmental benefits of geothermal energy? A) Geothermal energy reduces greenhouse gas emissions, has a smaller land footprint, and provides stable energy supply. B) Geothermal energy increases air pollution. C) Geothermal energy requires large amounts of water. D) Geothermal energy is only available in tropical regions. Show Answer Correct Answer: A) Geothermal energy reduces greenhouse gas emissions, has a smaller land footprint, and provides stable energy supply. 9. Reaction between hydrogen and nitrogen gives A) Ammonia. B) Ammonium. C) Ash. D) None of the above. Show Answer Correct Answer: A) Ammonia. 10. What is hydrogen primarily considered in the context of future energy? A) A primary energy source. B) An energy carrier. C) A type of fossil fuel. D) A form of water. Show Answer Correct Answer: B) An energy carrier. 11. Polar molecules tend to have lower boiling points than nonpolar molecules. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 12. Polar molecules have A) No charges. B) Slight positive and negative charges on opposite ends of the molecules. C) Only positive charges. D) Either positive or negative charges, but not both. Show Answer Correct Answer: B) Slight positive and negative charges on opposite ends of the molecules. 13. What are the two main types of hydrogen bonds? A) Covalent and Ionic bonds. B) Polar and Nonpolar bonds. C) Single and Double bonds. D) Intermolecular and Intramolecular hydrogen bonds. Show Answer Correct Answer: D) Intermolecular and Intramolecular hydrogen bonds. 14. Density of ice is ..... than waterdue to ..... bonding. A) Higher, hydrogen bonding. B) Lower, hydrogen bonding. C) Similar to, hydrogen bonding. D) All the above. Show Answer Correct Answer: B) Lower, hydrogen bonding. 15. Non-stoichiometric hydrides are formed by ..... A) C, Ni. B) Mn, Li. C) N, Cl. D) Pa, V. Show Answer Correct Answer: D) Pa, V. 16. What are the advantages of using geothermal energy? A) Advantages of using geothermal energy include low emissions, reliability, small land footprint, and job creation. B) Large land requirements. C) High water usage. D) Inconsistent energy supply. Show Answer Correct Answer: A) Advantages of using geothermal energy include low emissions, reliability, small land footprint, and job creation. 17. The atomic hydrogen is produced at a high temperature in an electric arc or under ultraviolet radiation. Why? A) Because it is inert at room temperature due to low H-H bond enthalpy. B) Because it is reactive at room temperature due to very high H-H bond enthalpy. C) Because it is inert at room temperature due to high H-H bond enthalpy. D) Because it is reactive at room temperature due to high H-H bond enthalpy. Show Answer Correct Answer: C) Because it is inert at room temperature due to high H-H bond enthalpy. 18. Which of the alkali metals is having least melting point A) Na. B) Rb. C) Cs. D) K. Show Answer Correct Answer: C) Cs. 19. The metallic oxide formed with iron reacts reversibly with water A) Magnetite. B) Iron(II) oxide. C) Iron (III) oxide. D) None of the above. Show Answer Correct Answer: A) Magnetite. 20. Solution A has a pH of 3 and solution Z has a pH of 6. How many times greater is the hydronium ion concentration in solution A than the hydronium ion concentration in solution Z? A) 100. B) 1000. C) 2. D) 3. Show Answer Correct Answer: B) 1000. 21. The process of Coal gasification is used to form ..... A) Mustard gas. B) Water gas. C) Syngas. D) Non of these. Show Answer Correct Answer: C) Syngas. 22. Which of the following determines the chemical properties? A) Number of protons. B) Number of electrons. C) Number of neutrons. D) None of these. Show Answer Correct Answer: B) Number of electrons. 23. Partial oxidation is an exothermic reaction. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 24. What is the strongest kind of intermolecular forces that occurs between molecules of NH$_{3}$? A) Hydrogen bonding. B) Dipole-Dipole forces. C) London dispersion forces. D) None of the above. Show Answer Correct Answer: A) Hydrogen bonding. 25. Which component of a hydrogen fuel cell is responsible for splitting hydrogen molecules into protons and electrons? A) Membrane. B) Anode. C) Electrolyte. D) Cathode. Show Answer Correct Answer: B) Anode. 26. As 0.1 M HCl is added to 0.1 M KOH, the pH of the basic solution A) Decreases and basicity decreases. B) Increases and basicity decreases. C) Decreases and basicity increases. D) Increases and basicity increases. Show Answer Correct Answer: A) Decreases and basicity decreases. 27. Where are hydrogen bonds in nucleic acids? A) Between carbons in sugar ring. B) Between nucleotides. C) Between phosphates. D) Between nitrogenous bases. Show Answer Correct Answer: D) Between nitrogenous bases. 28. The model used to describe and explain the bonding and arrangement of atoms in a solid metal is the A) Ball and stick model. B) Electron sea model. C) Metalloid model. D) Valence shell electron pair repulsion theory. Show Answer Correct Answer: B) Electron sea model. 29. What is the primary reason for the high boiling point of water compared to other group 16 hydrides? A) Hydrogen bonding. B) Ionic bonding. C) Covalent bonding. D) Metallic bonding. Show Answer Correct Answer: A) Hydrogen bonding. 30. In a hydrogen fuel cell, what is the role of the electrolyte? A) To conduct electricity. B) To separate hydrogen and oxygen gases. C) To facilitate the movement of ions. D) To store energy. Show Answer Correct Answer: C) To facilitate the movement of ions. 31. Which of the following is a major advantage of hydrogen fuel cells over traditional fossil fuels? A) Lower cost. B) Easier storage. C) Higher energy density. D) Zero emissions. Show Answer Correct Answer: D) Zero emissions. 32. Molar ration of nitrogen to hydrogen as reactants in the Haber process. A) 1:2. B) 1:3. C) 3:1. D) 2:1. Show Answer Correct Answer: B) 1:3. 33. Reaction between conc.HCl and MnO$_{2 }$ produces greenish yellow gas which turns moist starch iodide paper blue black, the gas is A) Chlorine. B) Hydrogen. C) Oxygen. D) None of the above. Show Answer Correct Answer: A) Chlorine. 34. Hydrogen is classified as an A) Element. B) Compound. C) All the above. D) None of the above. Show Answer Correct Answer: A) Element. 35. Is Sodium lighter than water? A) YES. B) NO. C) NOT REALLY. D) DEPENDING ON THE NATURAL STATE. Show Answer Correct Answer: A) YES. 36. What is the main postulate of the Bohr model regarding electron orbits? A) Electrons orbit the nucleus in fixed paths called energy levels. B) Electrons move randomly around the nucleus. C) Electrons are embedded in a positive sphere. D) Electrons do not exist in the atom. Show Answer Correct Answer: A) Electrons orbit the nucleus in fixed paths called energy levels. 37. What is the significance of hydrogen bonding in the secondary structure of proteins? A) It stabilizes the alpha helix and beta sheet structures. B) It forms the primary structure of proteins. C) It breaks down protein structures. D) It is irrelevant to protein structure. Show Answer Correct Answer: A) It stabilizes the alpha helix and beta sheet structures. 38. Which of the following is not true about sulphur dioxide, SO$_{2}$? A) SO$_{2}$ is released in the combustion of fossil fuels. B) SO$_{2}$ can act as a reducing agent. C) SO$_{2}$ can act as an oxidising agent. D) SO$_{2}$ is a basic gas. Show Answer Correct Answer: D) SO$_{2}$ is a basic gas. 39. In an H-bond, why does hydrogen become very positive compared to other elements? A) Its electron is held to one side of the nucleus leaving the other side completely expose. B) Its electron is held on both sides of the nucleus. C) Its two electrons are held on one side of the nucleus leaving the other side completely exposed. D) Its two electrons are held on both side of the nucleus. Show Answer Correct Answer: A) Its electron is held to one side of the nucleus leaving the other side completely expose. 40. Solid HCl melts at ..... A) 113$^{0}$C. B) 114$^{0}$C. C) 115$^{0}$C. D) None of the above. Show Answer Correct Answer: A) 113$^{0}$C. 41. When the concentration of hydrogen ions in a solution is decreased by a factor of ten, the pH of the solution A) Decreases by 1. B) Decreases by 10. C) Increases by 1. D) Increases by 10. Show Answer Correct Answer: C) Increases by 1. 42. What are the different types of geothermal energy systems? A) Wind Energy Turbines. B) Ground Source Heat Pumps, Direct Use Systems, Geothermal Power Plants (Dry Steam, Flash Steam, Binary Cycle). C) Hydroelectric Power Stations. D) Solar Thermal Systems. Show Answer Correct Answer: B) Ground Source Heat Pumps, Direct Use Systems, Geothermal Power Plants (Dry Steam, Flash Steam, Binary Cycle). 43. What is the transition for Violet? A) N=6 $\rightarrow$ n=2. B) N=4 $\rightarrow$ n=2. C) N=5 $\rightarrow$ n=2. D) N=3 $\rightarrow$ n=2. Show Answer Correct Answer: A) N=6 $\rightarrow$ n=2. 44. Why can hydrogen not be collected through downward displacement of air? A) Because it has a reactive explosion with air. B) Because hydrogen is practically insoluble in water. C) Water removes impurities. D) None of the above. Show Answer Correct Answer: A) Because it has a reactive explosion with air. 45. Why is it difficult to wash oil from your hands with plain water? A) Both substances are polar. Like polarities repel. B) Both substances are nonpolar. Like polarities repel. C) Water is nonpolar, and oil is polar, so they will not combine. D) Water is polar, and oil is nonpolar, so they will not combine. Show Answer Correct Answer: D) Water is polar, and oil is nonpolar, so they will not combine. 46. Metal which can give hydrogen gas even with nitric acid A) K. B) Mg. C) Ca. D) Na. Show Answer Correct Answer: B) Mg. 47. Why do coastal regions tend to be cooler? A) Due to low specific heat of water. B) Due to high density of water. C) Due to low density of water. D) Due to high specific heat of water. Show Answer Correct Answer: D) Due to high specific heat of water. 48. All thehydrogen stored in a porous reservoiraquifer or depleted field ) is recoverable: A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. 49. How can dative bond form between ammonia, NH$_{3}$ and hydrogen ion, H$^{+}$ to form ammonium ion, NH$_{4}$$^{+}$? A) Ammonia, NH$_{3}$ and hydrogen ion, H$^{+}$ will each share one electron. B) The pair of electrons not involved in covalent bond in ammonia, NH$_{3}$ will be shared with hydrogen ion, H$^{+}$. C) Ammonia, NH$_{3}$ and hydrogen ion, H$^{+}$ will each share one electron. D) None of the above. Show Answer Correct Answer: B) The pair of electrons not involved in covalent bond in ammonia, NH$_{3}$ will be shared with hydrogen ion, H$^{+}$. 50. How do hydrogen bonds contribute to the unique properties of ice? A) Hydrogen bonds create a stable lattice structure in ice, making it less dense than water, allowing it to float. B) Hydrogen bonds increase the temperature of ice, causing it to melt faster. C) Hydrogen bonds make ice denser than water, causing it to sink. D) Hydrogen bonds prevent ice from forming a solid structure, making it liquid. Show Answer Correct Answer: A) Hydrogen bonds create a stable lattice structure in ice, making it less dense than water, allowing it to float. 51. Which city do the waters of the Catawba River run as they enter the ocean? A) Savannah. B) Wilmington. C) Myrtle Beach. D) Charleston. Show Answer Correct Answer: D) Charleston. 52. Only polar molecules with H-F, H-N, or H-O bonds feel this kind of Intermolecular forces A) Hydrogen Bonding. B) Dipole-dipole forces. C) London dispersion forces. D) None of the above. Show Answer Correct Answer: A) Hydrogen Bonding. 53. Which of the following is not an use of oxygen? A) In hospitals. B) For cutting metals. C) As fuel for cars. D) For respiration. Show Answer Correct Answer: C) As fuel for cars. 54. Which one of the following statements about water is false? A) Water is oxidized to oxygen during photosynthesis. B) Water can act both as an acid and as a base. C) There is extensive intramolecular hydrogen bonding in the condensed phase. D) Ice formed by heavy water sinks in normal water. Show Answer Correct Answer: C) There is extensive intramolecular hydrogen bonding in the condensed phase. 55. Why is water NOT on the periodic table? A) It is naturally occuring. B) It is a compound, not an element. C) It exists as a solid, a liquid, and a gas. D) Its chemical formula doesn't fit. Show Answer Correct Answer: B) It is a compound, not an element. 56. What is the chemical equation for the reaction in a hydrogen fuel cell? A) $H_2 + O_2 \rightarrow H_2O$. B) $2H_2 + O_2 \rightarrow 2H_2O$. C) $H_2 + 2O_2 \rightarrow H_2O$. D) $2H_2 + 2O_2 \rightarrow 2H_2O$. Show Answer Correct Answer: B) $2H_2 + O_2 \rightarrow 2H_2O$. 57. Hydrogen is often called "inflammable air" due to what property? A) Its low density. B) Its high combustibility. C) Its neutral pH. D) Its ability to form water. Show Answer Correct Answer: B) Its high combustibility. 58. Which is the fuel cell used in military & space application? A) Alkaline Fuel Cell. B) Phosphoric acid fuel cell. C) Solid oxide fuel cell. D) None of the above. Show Answer Correct Answer: A) Alkaline Fuel Cell. 59. HCl gas with the alkaline phenolpthalein-colour changes to ..... A) Pink. B) Red. C) Colourless. D) None of the above. Show Answer Correct Answer: C) Colourless. 60. What is the role of steam in geothermal energy production? A) Steam cools down the geothermal plants. B) Steam is used to heat water for cooking. C) Steam drives turbines to generate electricity in geothermal energy production. D) Steam is a byproduct that is released into the atmosphere. Show Answer Correct Answer: C) Steam drives turbines to generate electricity in geothermal energy production. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 1Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 2Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 4Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 5Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 6Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 7Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 8Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books